Link a game piece to a card

I want to link a game piece to a card so that the pieces gets activated when the card is drawn. I was reading the how to link a piece to a chit section and I think I got lost. If someone could point me in the right direction, or provide a step by step I would greatly appreciate it!

On the Map Window, specify a key command that gets executed when a piece enters the map. On the card, set this key command to correspond to a Global Key Command trait. Have the Global Key Command pick out the pieces you want to activate. You can also have the card set a global property that the Global Key Command uses to pick out the pieces it will activate.

rk

Post generated using Mail2Forum (mail2forum.com)

I tried to follow but I am still not getting it. Is there an easy example I could follow or a mod with this type of behavior. Or if anyone can create an example so I can see what I may be doing wrong.